EP0271739A1 - Verfahren zum Reparieren und Schützen eines Endes eines metallischen Wärmeaustauschrohres und Buchse zur Durchführung - Google Patents

Verfahren zum Reparieren und Schützen eines Endes eines metallischen Wärmeaustauschrohres und Buchse zur Durchführung Download PDF

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Publication number
EP0271739A1
EP0271739A1 EP87117143A EP87117143A EP0271739A1 EP 0271739 A1 EP0271739 A1 EP 0271739A1 EP 87117143 A EP87117143 A EP 87117143A EP 87117143 A EP87117143 A EP 87117143A EP 0271739 A1 EP0271739 A1 EP 0271739A1
Authority
EP
European Patent Office
Prior art keywords
tube
sleeve
corrosion
area
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87117143A
Other languages
English (en)
French (fr)
Other versions
EP0271739B1 (de
Inventor
Gilbert Vigneron
Jean Bezier
Thong Nguyen Thanh
Pierre Vidal
Guy Zacharie
Lucien Guillemin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stein Industrie SA
Electricite de France SA
Original Assignee
Stein Industrie SA
Electricite de France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9341064&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0271739(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stein Industrie SA, Electricite de France SA filed Critical Stein Industrie SA
Publication of EP0271739A1 publication Critical patent/EP0271739A1/de
Application granted granted Critical
Publication of EP0271739B1 publication Critical patent/EP0271739B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F11/00—Arrangements for sealing leaky tubes and conduits
    • F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49352—Repairing, converting, servicing or salvaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
    • Y10T29/49742—Metallurgically attaching preform
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49748—Repairing by shaping, e.g., bending, extruding, turning, etc.
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49909—Securing cup or tube between axially extending concentric annuli
    • Y10T29/49911—Securing cup or tube between axially extending concentric annuli by expanding inner annulus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12347—Plural layers discontinuously bonded [e.g., spot-weld, mechanical fastener, etc.]

Definitions

  • the present invention relates to a method for repairing or protecting a damaged or corrosion-prone area of an end of a metal exchanger tube in the vicinity of the internal face of its tube plate, in which the inside is inserted tube a metal sleeve with an external diameter slightly smaller than the internal diameter of the tube, over a length sufficient to cover the damaged or prone to corrosion area, the end of the sleeve is approached in the tube beyond the damaged or prone to corrosion area , locally welds the docked end of the sleeve on the inside of the tube with partial penetration into it, and locally welds the end of the sleeve on the side of the external face of the tube plate and of the zone of the corresponding end of the tube. It also extends to a sleeve usable in this process.
  • one of the fluids for example the heating fluid
  • circulates inside the tubes and the other, for example the heated fluid, to the outside of the tubes.
  • the object of the present invention is to provide a method of repairing or protecting a damaged or subject to corrosion area of a tube end, which avoids any danger of subsequent corrosion of the tube, in particular by creating excessive residual stresses in that -this, while constituting a mechanically robust protection and an absolute seal
  • the method according to the invention is characterized in that, prior to the localized welding of the end of the sleeve situated on the side of the external face of the tubular plate, it is carried out on a localized expansion of this end of the sleeve against the tube, in that one carries out the localized welding inside the expanded area with partial penetration of the weld into the tube, and in that one then performs an expansion of the end region of the sleeve against the tube in an area inside the tube plate above the localized weld.
  • the end of the latter intended to be expanded in the tube on the side of the external face of the tube plate is provided with a series of longitudinal grooves, and before performing the welding, the air present in the gap between the tube and the sleeve is expelled by blowing inert gas into these grooves or by placing them under vacuum.
  • the other end of the sleeve is also provided with a series of longitudinal grooves, and before welding is effected near this other end, the air present in the gap between the tube and the sleeve is expelled by gas blowing inert in the grooves or by vacuum.
  • the weld on the end of the sleeve is subjected to the inside of the tube beyond the damaged area or subject to corrosion to a stress relieving treatment using an internal inductor.
  • the area of the sleeve beyond that in the tube in the tube inside the tube plate is subjected to a stress relieving treatment ment by a light expansion.
  • the invention further extends to a sleeve for carrying out the method of the invention, with an external diameter slightly less than the internal diameter of the tube, and with a length greater than that of the damaged area or subject to corrosion, characterized in that it comprises either in the vicinity of one of its ends an external metallic coating of small thickness which is a good conductor of heat and which is not very oxidizable, or, at least at one of its ends, an area provided with fines longitudinal external grooves, or both.
  • the tube 1 is fixed to the tubular plate 2, in the usual way, by swaging, and its lower end is welded to the external face of this plate, as represented by the weld bead 3.
  • the repair is carried out using an internal sleeve 5, with an external diameter slightly smaller than the internal diameter of the tube, which covers the partially corroded zone of the tube.
  • This sleeve 5 is tightly connected to the tube in the two zones 6, inside the tube plate, and 7, beyond the latter and the corroded zone.
  • the sleeve is first expanded in the tube in a localized manner in this zone. This expansion can take place under inert gas or with inert gas blowing.
  • the welding is carried out back from the edge of the sleeve by the automatic arc arc process using an inert gas using a device for internal welding of tubes (this position allowing greater flexibility in the adjustment in altitude welding torch).
  • the preliminary expansion allows the heat to be concentrated in the area to be welded, which facilitates the penetration of the weld, the removal of the metal after welding and the evacuation of the gas trapped between the tube and the sleeve.
  • the weld bead must have good penetration into the thickness of the tube (from 20% to 75% thereof), but without crossing it.
  • the sleeve can be provided in the region provided for the weld bead and on either side of it with a thin deposit of a metal which is not very oxidizable and which is a good conductor of heat. , such as chromium, obtained for example by metallization (deposit 14 in fig. 3). It is also possible, in order to further facilitate the evacuation of the air retained in the gap between the tube and the sleeve, to provide the lower end of the sleeve up to the level of the weld bead with fine longitudinal grooves. , for example four 90 ° grooves (grooves 15 and fig.4). The air can be evacuated either by blowing inert gas, or by vacuum, if the assembly allows.
  • the upper weld is then produced after the sleeve has come into contact with the tube by controlled deformation of the diameter, by controlling the expansion of the sleeve by the number of spindle turns of a dudgeon.
  • This ensures good repeatability of obtaining good contact between the tube and the sleeve, a necessary condition for ensuring good bond welding by limiting the stresses induced in the tube.
  • This upper welding can also be carried out behind the edge of the sleeve, for example at 20 or 30 mm from this edge (weld bead 9 in FIG. 1). It is also possible to ensure complete fusion welding of the edge of the sleeve (weld bead 9A in FIG. 2).
  • the shape of this connection allows the control of the zone 13 thermally affected by the welding and located above the welding.
  • This type of weld bead is obtained by adjusting the position and the inclination of the welding electrode, that is to say by appropriate preparation of the end of the sleeve by machining.
  • Welding operations can optionally be substituted by the arc under inert gas process with tungsten electrode for welding by laser beam or by electronic beam.
  • the quality of the welds can be controlled by non-destructive means such as endoscopic examination, penetrant testing, eddy currents and ultrasound.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)
EP87117143A 1986-11-21 1987-11-20 Verfahren zum Reparieren und Schützen eines Endes eines metallischen Wärmeaustauschrohres und Buchse zur Durchführung Expired - Lifetime EP0271739B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8616231A FR2607235B1 (fr) 1986-11-21 1986-11-21 Procede de reparation ou de protection d'une extremite de tube metallique d'echangeur de chaleur, et manchon pour sa mise en oeuvre
FR8616231 1986-11-21

Publications (2)

Publication Number Publication Date
EP0271739A1 true EP0271739A1 (de) 1988-06-22
EP0271739B1 EP0271739B1 (de) 1990-10-03

Family

ID=9341064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117143A Expired - Lifetime EP0271739B1 (de) 1986-11-21 1987-11-20 Verfahren zum Reparieren und Schützen eines Endes eines metallischen Wärmeaustauschrohres und Buchse zur Durchführung

Country Status (9)

Country Link
US (1) US4960650A (de)
EP (1) EP0271739B1 (de)
JP (1) JPS63153398A (de)
KR (1) KR880006523A (de)
DE (1) DE3765402D1 (de)
ES (1) ES2017991B3 (de)
FR (1) FR2607235B1 (de)
IN (1) IN172043B (de)
ZA (1) ZA878663B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416848A1 (de) * 1989-09-08 1991-03-13 Nnc Limited Wärmetauscher
FR2736989A1 (fr) * 1995-07-19 1997-01-24 Gec Alsthom Stein Ind Dispositif destine a etre fixe de facon etanche sur au moins un element cylindrique

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652440B1 (fr) * 1989-09-27 1993-12-03 Framatome Procede de reparation par chemisage d'un tube tel qu'un tube de generateur de vapeur.
US5430270A (en) * 1993-02-17 1995-07-04 Electric Power Research Institute, Inc. Method and apparatus for repairing damaged tubes
US5372391A (en) * 1993-02-22 1994-12-13 The United States Of America As Represented By The United States Department Of Energy Internal pipe attachment mechanism
US5392322A (en) * 1993-11-22 1995-02-21 General Electric Company Shroud repair clamp
FR2726885A1 (fr) * 1994-11-15 1996-05-15 Framatome Sa Procede de fixation resistante et etanche d'une manchette a l'interieur d'un tube metallique et manchette de reparation d'un tube metallique
US7551705B2 (en) * 2003-12-11 2009-06-23 Areva Np, Inc. Fuel assembly top nozzle repair sleeve and method for repairing a fuel assembly
WO2005087426A1 (de) * 2004-03-09 2005-09-22 Bruendermann Georg Verfahren zur herstellung einer wärmetauscher-trennwand mit einer aufpanzerung und wärmetauscher-trennwand
DE102004056619B4 (de) * 2004-03-09 2007-06-06 BRÜNDERMANN, Georg Verfahren zur Herstellung einer Wärmetauscher-Trennwand mit einer Aufpanzerung und Wärmetauscher-Trennwand
US9101997B2 (en) * 2008-09-11 2015-08-11 Siemens Energy, Inc Asymmetric heat sink welding using a penetration enhancing compound
US20150105212A1 (en) * 2013-10-14 2015-04-16 Caterpillar Inc. System and method for salvaging a pin-bore assembly
RU2675952C2 (ru) * 2014-01-10 2018-12-25 Эуротекника Меламине, Люксембург, Цвайгнидерлассунг ин Иттиген Трубчатый теплообменник и установка, в частности реактор для производства меламина, содержащая такой теплообменник
CN114182088B (zh) * 2021-12-08 2023-10-13 中国石油大学(华东) 降低管壳式换热器换热管与管板焊接接头应力腐蚀开裂风险的局部热处理方法

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US3792603A (en) * 1972-07-26 1974-02-19 Glaenzer Spicer Sa Apparatus for assembling two parts into interlocked and interfitting relationship
EP0047407A1 (de) * 1980-09-09 1982-03-17 Westinghouse Electric Corporation Auskleidungsverfahren
EP0112612A2 (de) * 1982-09-30 1984-07-04 The Babcock & Wilcox Company Reparieren von undichten Rohren in Dampfgeneratoren
EP0121137A1 (de) * 1983-04-04 1984-10-10 Combustion Engineering, Inc. Dichtgeschweisster Rohreinsatz
EP0181250A1 (de) * 1984-11-06 1986-05-14 Framatome Muffeneinsatzverfahren zum Reparieren eines Dampferzeugerrohres und Reparaturmuffe für dieses Rohr

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US4713870A (en) * 1985-03-26 1987-12-22 Raychem Corporation Pipe repair sleeve apparatus and method of repairing a damaged pipe
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792603A (en) * 1972-07-26 1974-02-19 Glaenzer Spicer Sa Apparatus for assembling two parts into interlocked and interfitting relationship
EP0047407A1 (de) * 1980-09-09 1982-03-17 Westinghouse Electric Corporation Auskleidungsverfahren
EP0112612A2 (de) * 1982-09-30 1984-07-04 The Babcock & Wilcox Company Reparieren von undichten Rohren in Dampfgeneratoren
EP0121137A1 (de) * 1983-04-04 1984-10-10 Combustion Engineering, Inc. Dichtgeschweisster Rohreinsatz
EP0181250A1 (de) * 1984-11-06 1986-05-14 Framatome Muffeneinsatzverfahren zum Reparieren eines Dampferzeugerrohres und Reparaturmuffe für dieses Rohr

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416848A1 (de) * 1989-09-08 1991-03-13 Nnc Limited Wärmetauscher
US5155894A (en) * 1989-09-08 1992-10-20 Nnc Limited Method of repairing by lining heat exchanger tubes
FR2736989A1 (fr) * 1995-07-19 1997-01-24 Gec Alsthom Stein Ind Dispositif destine a etre fixe de facon etanche sur au moins un element cylindrique
WO1997004268A1 (fr) * 1995-07-19 1997-02-06 Gec Alsthom Stein Industrie Dispositif destine a etre fixe de façon etanche sur au moins un element cylindrique
US5924743A (en) * 1995-07-19 1999-07-20 Gec Alsthom Stein Industrie Device adapted to be fixed and sealed to at least one cylindrical member
RU2157945C2 (ru) * 1995-07-19 2000-10-20 Гец Альстом Стэн Эндюстри Устройство для герметичного крепления, по крайней мере, на одном цилиндрическом элементе
CN1069391C (zh) * 1995-07-19 2001-08-08 Gec阿尔松·斯坦工业公司 用于密封固定在至少一个圆柱形件上的装置

Also Published As

Publication number Publication date
DE3765402D1 (de) 1990-11-08
FR2607235B1 (fr) 1990-02-16
FR2607235A1 (fr) 1988-05-27
JPS63153398A (ja) 1988-06-25
IN172043B (de) 1993-03-20
US4960650A (en) 1990-10-02
EP0271739B1 (de) 1990-10-03
ZA878663B (en) 1988-05-18
KR880006523A (ko) 1988-07-23
ES2017991B3 (es) 1991-03-16

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